Charging system issues??
Stellar HDF Member
Joined: Dec 2005
Posts: 2,598
Likes: 52
From: South Jersey
Had the same problem with my "06 SG when it was fairly new. Turned out being the Stator. I also changed the voltage regulator while I was at it just to make sure. Since then it's been charging fine.
Road Master
Joined: Jun 2011
Posts: 974
Likes: 13
From: Chesapeake Virginia
The low charging voltage across the battery after 3 minutes is an indication of a bad regulator. Your stator seems be good. My 07 electrical service manual is for three phase systems and does not give very good regulator tests other than charging voltage. Older regulator tests I have seen called for using a test light from ground to the regulator terminals that plug in to the stator. With the key on if the test light lights for either pin the regulator is bad. You should also check your regulator for a good ground (less than 1 ohm resistance) from regulator ground to battery ground.
Road Master
Joined: Mar 2010
Posts: 1,013
Likes: 0
From: Nashville TN
the stator is tested by pulling the plug from the front of the left motor case.
this is a cut and paste from Peppi: ( cause i am too lazy to type, but enough energy to search)
Start by sniffing the primary oil, if it smells burnt, it's probably the stator that is bad but you're better off changing the regulator too because they usually go belly up shortly after replacing the stator.
# Unplug the regulator plug from the stator
# Start motorcycle and change Voltmeter to AC volts.
# Probe both stator wires with your meter leads.
# The motorcycle should be putting out approximately 18-20 ACV per 1,000
rpm. (Reading will vary depending on system, check service manual specification)
5. Generic Specs:
* 22 amp system produces about 19-26 VAC per 1,000 rpm
* 32 amp system produces about 16-20 VAC per 1,000 rpm
* 45 amp system produces about 19-26 VAC per 1,000 rpm
Stator Resistance Check:
motor off
1. Switch your multi meter to Ohm x 1 scale.
2. Probe each stator wires with meter leads and check resistance on meter.
3. Resistance should be in the range of 0.1-0.5 Ohms. (Reading will vary depending on system, check service manual for specification)
4. Generic Specs:
* 22 amp system produces about 0.2 to 0.4 ohms
* 32 amp system produces about 0.1 to 0.2 ohms
* 45 amp system produces about 0.1 to 0.2 ohms
remember that the stator puts out AC voltage- the VR converts to DC and keeps under 14.8 volts.
it is possible that you have something draining power ( even an internally shorted light bulb, it happens--- here's good one, my pal lowered his road king, the tire ate through the wiring insulation inside the rear fender--- when it got moist power would trickle from the chewed wiring through the dirt inside his fender...and his battery would drain while riding- the stress on the charging system caused it to fail_)
so check the charging system first, if that is all fine then it's going through the loads ( various circuits)
the meter in the dash, like all the lighting up front, runs through the ign.
switch.
the switch can be a weak point esp. if high wattage bulbs have been used up front- the contacts can burn, pit, arc.
on my evo bagger the voltage drop to the dash was about 1.2 volts with everything on.
because of that I ran new 10 ga wiring up front for the lights and used the stock wiring just to activate relays on the hi beam/ low beam/ each spot and the accs.
so 5 relays all together, i figured if I was in there I mights as well go all the way- and there was room for 5 relays on top of the radio
when figuring out electricval problems, I would sometimes tape the meter to my bars - the trickle charger plug can be used for an adapted plug to the meter
Mike
this is a cut and paste from Peppi: ( cause i am too lazy to type, but enough energy to search)
Start by sniffing the primary oil, if it smells burnt, it's probably the stator that is bad but you're better off changing the regulator too because they usually go belly up shortly after replacing the stator.
# Unplug the regulator plug from the stator
# Start motorcycle and change Voltmeter to AC volts.
# Probe both stator wires with your meter leads.
# The motorcycle should be putting out approximately 18-20 ACV per 1,000
rpm. (Reading will vary depending on system, check service manual specification)
5. Generic Specs:
* 22 amp system produces about 19-26 VAC per 1,000 rpm
* 32 amp system produces about 16-20 VAC per 1,000 rpm
* 45 amp system produces about 19-26 VAC per 1,000 rpm
Stator Resistance Check:
motor off
1. Switch your multi meter to Ohm x 1 scale.
2. Probe each stator wires with meter leads and check resistance on meter.
3. Resistance should be in the range of 0.1-0.5 Ohms. (Reading will vary depending on system, check service manual for specification)
4. Generic Specs:
* 22 amp system produces about 0.2 to 0.4 ohms
* 32 amp system produces about 0.1 to 0.2 ohms
* 45 amp system produces about 0.1 to 0.2 ohms
remember that the stator puts out AC voltage- the VR converts to DC and keeps under 14.8 volts.
it is possible that you have something draining power ( even an internally shorted light bulb, it happens--- here's good one, my pal lowered his road king, the tire ate through the wiring insulation inside the rear fender--- when it got moist power would trickle from the chewed wiring through the dirt inside his fender...and his battery would drain while riding- the stress on the charging system caused it to fail_)
so check the charging system first, if that is all fine then it's going through the loads ( various circuits)
the meter in the dash, like all the lighting up front, runs through the ign.
switch.
the switch can be a weak point esp. if high wattage bulbs have been used up front- the contacts can burn, pit, arc.
on my evo bagger the voltage drop to the dash was about 1.2 volts with everything on.
because of that I ran new 10 ga wiring up front for the lights and used the stock wiring just to activate relays on the hi beam/ low beam/ each spot and the accs.
so 5 relays all together, i figured if I was in there I mights as well go all the way- and there was room for 5 relays on top of the radio
when figuring out electricval problems, I would sometimes tape the meter to my bars - the trickle charger plug can be used for an adapted plug to the meter
Mike
Outstanding HDF Member
Joined: Feb 2007
Posts: 2,837
Likes: 50
From: usa
Back in apr of 06 I bought a new EG Standard,within a month or so there was a TSB or recall on regulators made in a certain time period.I don't remember the dates,but this might spark some ones memory on here.Or your local dealer might be able to give you some info.
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